Cell Phone Trick Enlarges Your Screen

What about enlarge the size of your mobile phone screen to watch videos ?
here a simple yet amazing trick

1 - Obtain a Fresnel lens like one of these from eBay or other retailer.
2- Make a stand for the lens. This can be as simple as cutting slots in two blocks of rubber, foam or wood.
3- Stand the lens vertically and prop up your cell phone behind it.
4- Adjust the distance between the two until the magnification is to your liking.

i believe that some of the first bigscreen tv's used a similar approach but used 3 light projectors on the Fresnel lens. If you take one of these lenses out of a tv you can burn almost anything thekingofrandom has a video on it.